ferment²

vt.

1. 使发酵
   When wine is fermented, it gives off bubbles of gas.

   酒发酵时发出气泡。

2. 酝酿
3. 使骚动
   His speeches fermented trouble among the work force.

   他的讲话在工人中引起骚动。

vi.

1. 发酵
   Fruit juices ferment if they are kept a long time.

   果汁放置日久会发酵。

2. 骚动